Differential Serialization for Optimized SOAP Performance

  • Authors:

  • Nayef Abu-Ghazaleh;Michael J. Lewis;Madhusudhan Govindaraju

  • Affiliations:

  • State University of New York, Binghamton NY;State University of New York, Binghamton NY;State University of New York, Binghamton NY

  • Venue:
  • HPDC '04 Proceedings of the 13th IEEE International Symposium on High Performance Distributed Computing
  • Year:
  • 2004

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Abstract

The SOAP protocol has emerged as a Web Service communication standard, providing simplicity, robustness, and extensibility. SOAP's relatively poor performance threatens to limitits usefulness, especially for high-performance scientific applications. The serialization of outgoing messages, which includes conversion of in-memory data types to XML-based string format and the packing of this data into message buffers, is a primary SOAP performance bottleneck. We describe the design and implementation of differential serialization, a SOAP optimization technique that can help bypass the serialization step for messages similar to those previously sent by a SOAP client or previously returned by a SOAP-based Web Service. The approach requires no changes to the SOAP protocol. Our implementation and performance study demonstrate the technique's potential, showing a substantial performance improvement over widely used SOAP toolkits that do not employ the optimization. We identify severalfactors that determine the usefulness and applicability of differential serialization, present a set of techniques for increasing the situations in which it can be used, and explore the design space of the approach.